Sanitaire Blue Line Series Introduction?

[kirbyclassiciii]

May I ask if anybody here remembers exactly what year Sanitaire's "Blue Line" series of consumer-use vacuum cleaners came out?

I want to think it was 1983, which was the year they had their canned-ham canister model S440A. The first few uprights in the Blue Line were models S639 (same as commercial SC679 "Maid-Saver"), S644 (SC684), S646 (SC686) and S648 (SC688).

~Ben

 

[paul]

Ben,

As Sanitaire rarely advertised in newspapers, I was unable to locate anything to verify the start of its blue professional line.

1980s hospitality industry or home maintenance trade journal and catalog advertisements and articles likely have the information. You may be able to access digitized copies or request hard copies at worldcat.org or other sources through your local library.